EP1520827A1 - Method and apparatus for controlling the yarn tension in a textile machine and use of the method - Google Patents

Method and apparatus for controlling the yarn tension in a textile machine and use of the method Download PDF

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Publication number
EP1520827A1
EP1520827A1 EP03022333A EP03022333A EP1520827A1 EP 1520827 A1 EP1520827 A1 EP 1520827A1 EP 03022333 A EP03022333 A EP 03022333A EP 03022333 A EP03022333 A EP 03022333A EP 1520827 A1 EP1520827 A1 EP 1520827A1
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EP
European Patent Office
Prior art keywords
thread
tension
yarn
guide
delivery
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Granted
Application number
EP03022333A
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German (de)
French (fr)
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EP1520827B1 (en
Inventor
Franz Böni
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SSM Schaerer Schweiter Mettler AG
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SSM Schaerer Schweiter Mettler AG
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Priority to DE50305700T priority Critical patent/DE50305700D1/en
Priority to EP03022333A priority patent/EP1520827B1/en
Priority to AT03022333T priority patent/ATE345303T1/en
Publication of EP1520827A1 publication Critical patent/EP1520827A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/005Means compensating the yarn tension in relation with its moving due to traversing arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/384Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20Location in space
    • B65H2511/22Distance
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00Dynamic entities; Timing aspects
    • B65H2513/10Speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30Forces; Stresses
    • B65H2515/31Tensile forces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method for controlling the thread tension on a Textile machine on which the thread is deducted from a supply by a thread delivery and a thread guide having a yarn guide is supplied, wherein a Regulated variable for the delivery speed of the thread is obtained.
  • Constant thread tension is one of the prerequisites for optimum and uniform quality of the product produced in the process in question. Nevertheless, it comes with the winding process again and again that, depending on the quality of the feed bobbin, of possibly made thread treatments such as dyeing and the like, and of the Winding speed, the thread tension fluctuates relatively strong. Because of this were various devices proposed that allow a constant thread tension for example, those described in DE-C-38 24 034 and in EP-A-0 950 742.
  • the device for controlling the yarn feed on a machine described in EP-A-0 950 742 Textile machine such as a knitting, kneading or winding machine, contains a sensor for measuring the thread tension, means for measuring the yarn delivery speed and a Control for precise adjustment of these two parameters, preferably the yarn delivery speed is regulated by the thread tension.
  • a similar device is in EP-A-0 875 479 by Shurer Schweiter Mettler AG.
  • EP-A-1 318 097 a method of the type mentioned is described in which a distinction of the disturbances causing the fluctuations of the thread tension after periodic and stochastic disturbances, and the periodic disturbances calculated and taken into account for the said controlled variable.
  • the stochastic Faults are caused by the deduction of the thread disturbances and the periodic Disturbances that are much larger than the stochastic ones are caused by the laying of the thread conditional disturbances. Since the latter are geometrically conditioned, they can be calculated.
  • the invention should now this known method for controlling the thread tension On a textile machine can be improved so that the quality of the compensation of periodic thread tension fluctuations further improved and thereby the tolerance bandwidth the yarn tension in the product produced becomes narrower.
  • a first preferred embodiment of the method according to the invention is characterized characterized in that the measurement of the thread tension at fixed positions n times over a Hub of the thread guide takes place, and that the measured values for each position over m laying cycles be determined and averaged.
  • the position-dependent determination of the thread tension and the associated synchronization of the The delivery speed of the thread is independent of the stroke and the speed of the thread Yarn guide. This independence allows the compensation of periodic fluctuations the thread tension also at start and stop ramps as well as at low production speeds.
  • a second preferred embodiment of the method according to the invention is characterized characterized in that disturbances of the thread tension due to the deviation of the current position-dependent measured value from the value averaged over m cycles.
  • a third preferred embodiment of the inventive method is the position-dependent measured value of the thread tension is used as basic controlled variable, which at the reversal points of the thread guide a correction value for a short-term Abbremsung the delivery plant is superimposed.
  • a fourth preferred embodiment is characterized in that based on the position-dependent measured value of the thread tension an adaptive adjustment of the delivery speed takes place, in which, depending on the respective position of the yarn guide the delivery speed is increased or reduced.
  • the invention further relates to a device for controlling the thread tension on a textile machine, with a motor-driven delivery mechanism for the thread and a thread laying with a yarn guide for winding the yarn on a yarn carrier, wherein the Drive of the delivery mechanism is regulated so that a balance of the thread laying conditional disturbances of the thread tension occurs.
  • the inventive device is characterized by a sensor for measuring the thread tension and by an evaluation stage for the sensor signals, in which an assignment of the measured values of the sensor to respective position of the thread guide, and by means for an ongoing synchronization between the position of the thread guide and the control of the thread delivery.
  • a first preferred embodiment of the device according to the invention is characterized characterized in that an averaging of the measured values of the thread tension for the individual Positions over a number of laying cycles takes place.
  • a second preferred embodiment of the device according to the invention is characterized in that that the determination of the named controlled variable takes into account the current thread speed occurs.
  • a third preferred embodiment of the device according to the invention is characterized in that that a first control stage for the drive of the yarn carrier and the thread laying and provided with this second control stage for the drive of the delivery mechanism of which one contains the mentioned evaluation stage, and that between the both control stages an ongoing transmission and synchronization of the position of the thread guide he follows.
  • a further preferred embodiment of the device according to the invention is characterized characterized in that the thread guide performs a reciprocating traversing movement, and that the drive of the delivery mechanism is regulated so that at the reversal positions of the Yarn guide a serving to compensate for the downtime of the yarn guide reduction the yarn delivery speed takes place.
  • the invention further relates to an application of said method to winding machines, Aircovering machines or texturing machines.
  • the winding station shown in Fig. 1 consists of a Aufsteckung 1 for receiving a feed bobbin 2 with a thread F, a thread insulation 3, one of a motor 4 driven Delivery mechanism 5, a sensor 6 for measuring the tension of the thread F and a Winding unit 7.
  • the latter consists of a by a motor (not shown) drivable Spindle 8 for receiving and holding a bobbin tube 9, on which a coil 10th is wound, and from a thread laying 11.
  • the drive of the coil 10th take place via a motor-driven friction roller on which the coil 10 rests (see EP-A-1 125 878).
  • the thread laying 11 contains a thread guide as the most essential element 12, which performs an oscillating traversing movement along the axis of the spool 10.
  • a oscillating traversing motion yarn guide 12 can also be a so-called Wing-thread laying of the type described in EP-A-0 997 422 may be provided.
  • a such wing thread laying has two counter-rotatable, superimposed Thread guide wing and a bow disc on. The thread guide wings emerge from the contour of the Arch disc out and dive back into this, where at the immersion points of the Thread guide wings in each case the transfer of the thread takes place.
  • the yarn guide 12 is movable to and fro in a rail or groove-like guide Glide element 13 attached to which a traversing element 14 attacks.
  • This is as flexible and stiff in traversing direction organ for transmitting tensile forces formed and for example by a string, a wire, a metal cable, a flat, toothed or V-belt, a metal band, a chain or the like. Formed.
  • the traversing element 14 passes over two Rollers 15 and 16, one of which, according to the role of the roller 16, as a drive wheel for the Drive of the traversing element 14 is used.
  • the drive wheel 16 is by a servo motor (not shown), preferably a stepper motor, driven.
  • the drive wheel 16 is mounted directly on the motor shaft.
  • the engine is a sensor (not shown) for detecting the rotational position of the drive wheel 16 and thus associated with the traversing position of the thread guide 12. Regarding this sensor is on the EP-A-0 829 444 and corresponding US-A-5,918,829.
  • the sensor is a consisting of a transmitting and a receiving diode photoelectric sensor, the Movement of the drive wheel 16 or scanned with this rigidly connected disc.
  • the Driving wheel 16 or the disc is for this purpose with suitable optically scannable markings, for example, with holes or slots arranged along a circle.
  • the drive motors of the spindle 8 and the drive wheel 16, the sensor for the traversing position the thread guide 12 and any other sensors, for example, for the speed of Coil 10, are connected to a spindle control 17, which uses the aforementioned motors programmed winding parameters and winding laws as well as those of the sensors controls supplied data.
  • the spindle control 17 is also provided with a delivery control 18 connected, which in turn with the yarn tension sensor 6 and the drive motor. 4 of the delivery plant 5 is connected.
  • the thread tension sensor 6 measures the variations in the thread tension at fixed Positions n times over a hub. These measured values are determined over m laying cycles and averaged. The values obtained thus show an image of the thread shortening or thread extension before the thread laying 11 and form the pilot value for the controlled variable of Thread delivery.
  • Important for the position-dependent determination of the thread tension is the Information on which position the yarn guide 12 is at a certain time. This information is continuously high priority between the spindle control 17 and the Delivery control 18 exchanged and there is a synchronization of the time base.
  • Periodic thread fluctuations are disturbances caused by the thread laying 11 are.
  • a look at the geometry of the thread laying shows that because of the linear Movement of the thread guide 12, the length of the thread F between this and the thread tension sensor 6 at the reversal points of the traversing movement is greater than in the middle.
  • the geometry of the thread laying 11, which is well known, is used to thread delivery 5 to decelerate briefly at the reversal points of the yarn guide 12. At these reversal points There is a significant, but dependent on the Bewicklungsin throttling the Motor 4 to compensate for the downtime of the yarn guide 12 at the reversal points.
  • the diagram of Fig. 2 shows the control loop for the described control of the thread tension: At the top left you can see the parameters of the spindle control 17 specifiable 19, this is the laying geometry and the winding geometry, including that of the delivery control 18 predefinable setpoint 20 of the thread tension. The latter is via an adder 21 and a transfer function 22 associated with the parameters 19.
  • the adder 21 is also the actual value of the thread tension measured and processed by the thread tension sensor 6 fed.
  • transfer function 22 the mathematical relationship between input and output signal in consideration of a time delay. With In other words, responding to a change in the input of the transfer function 22 their output in a characteristic way with a new value.
  • the link of the Output of the transfer function 22 with the parameters 19 reaches the controlled system 23, this is the element to be influenced or the part of the control loop to be controlled.
  • these are the thread F and the Properties of the elements which the thread F touches on its way.
  • Such properties are, for example, the surface of the drive roller (delivery mechanism 5) and the surfaces all deflection points.
  • the material parameters 24 of the thread F are essential for the scheme. They are listed as a separate box because it depends on the Material other rule settings can be used.
  • the output signal of Level 24 is the actual value of the thread tension / thread tension.
  • the thread tension will be n times fixed positions (angle synchronous) and measured by the controller in a step 25 over m Averaged samples.
  • the thread tension thus sets the position-dependent actual value to regulating variable 26 is the control algorithm 26, for example, a PD controller, PID controller or 3-point controller. Disturbances of the thread tension are recognized as such, because their current Value deviates from the value averaged over m periods.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

To control the tension of a yarn (F) at a bobbin winder, where it is drawn from a cop (2) by a take-off (5) to be passed to a reciprocating yarn guide (12), a control value is derived for the yarn feed speed. The yarn tension is measured by a sensor (6) according to its position, and tension deviations are taken into account for the control value. There is a continuous synchronizing between the position of the yarn guide and the yarn feed control (18), giving a yarn tension value related to yarn guide positions. The yarn tension is measured a number of times at fixed positions in the movement path of the yarn guide during a stroke, and the values are established over a number of yarn laying cycles. Yarn tension problems are identified by a deviation of the actual position-related value from the value derived from the values obtained from the laying cycles.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Regelung der Fadenspannung auf einer Textilmaschine, auf welcher der Faden durch eine Fadenlieferung von einem Vorrat abgezogen und einer einen Fadenführer aufweisenden Fadenverlegung zugeführt wird, wobei eine Regelgrösse für die Liefergeschwindigkeit des Fadens gewonnen wird.The present invention relates to a method for controlling the thread tension on a Textile machine on which the thread is deducted from a supply by a thread delivery and a thread guide having a yarn guide is supplied, wherein a Regulated variable for the delivery speed of the thread is obtained.

Für verschiedene Prozesse in der Textilindustrie, beispielsweise für den Spulprozess, ist eine konstante Fadenspannung eine der Voraussetzungen für eine optimale und einheitliche Qualität des bei dem betreffenden Prozess hergestellten Produkts. Trotzdem kommt es beim Spulprozess immer wieder vor, dass in Abhängigkeit von der Qualität der Vorlagespule, von eventuell vorgenommenen Fadenbehandlungen wie beispielsweise Färben und dergleichen, und von der Spulgeschwindigkeit, die Fadenspannung relativ stark schwankt. Aus diesem Grund wurden verschiedene Einrichtungen vorgeschlagen, die eine konstante Fadenspannung ermöglichen sollen, beispielsweise die in der DE-C-38 24 034 und in der EP-A-0 950 742 beschriebenen.For various processes in the textile industry, for example, for the winding process, is one Constant thread tension is one of the prerequisites for optimum and uniform quality of the product produced in the process in question. Nevertheless, it comes with the winding process again and again that, depending on the quality of the feed bobbin, of possibly made thread treatments such as dyeing and the like, and of the Winding speed, the thread tension fluctuates relatively strong. Because of this were various devices proposed that allow a constant thread tension for example, those described in DE-C-38 24 034 and in EP-A-0 950 742.

Bei der in der DE-C-38 24 034 beschriebenen Einrichtung sind bei einer fadenverbrauchenden Maschine, insbesondere einer Rundstrickmaschine, die mehrere fadenverarbeitende Stellen aufweist, entsprechend viele Liefereinrichtungen für das fadenförmige Gut vorgesehen. An jeder Lieferstelle befindet sich eine Fadenspannungseinrichtung, die mit dem fadenförmigen Gut zusammen wirkt und einen Geber und eine Messschaltung enthält.In the device described in DE-C-38 24 034 are in a thread-consuming Machine, in particular a circular knitting machine, the several thread-processing sites has, according to many delivery facilities provided for the filamentary Good. At Each delivery point is a thread tensioning device with the thread-like Works well together and contains a sensor and a measuring circuit.

Die in der EP-A-0 950 742 beschriebene Einrichtung zur Steuerung der Garnzufuhr an einer Textilmaschine, wie beispielsweise einer Strick-, Wirk- oder Spulmaschine, enthält einen Sensor zu Messung der Fadenspannung, Mittel zur Messung der Fadenliefergeschwindigkeit und eine Steuerung zur präzisen Einstellung dieser beiden Parameter, wobei vorzugsweise die Fadenliefergeschwindigkeit anhand der Fadenspannung geregelt wird. Eine ähnliche Einrichtung ist in der EP-A-0 875 479 der Schärer Schweiter Mettler AG beschrieben.The device for controlling the yarn feed on a machine described in EP-A-0 950 742 Textile machine, such as a knitting, kneading or winding machine, contains a sensor for measuring the thread tension, means for measuring the yarn delivery speed and a Control for precise adjustment of these two parameters, preferably the yarn delivery speed is regulated by the thread tension. A similar device is in EP-A-0 875 479 by Schärer Schweiter Mettler AG.

Bei Spulmaschinen besteht das Problem, dass durch die lineare Bewegung der Fadenverlegeeinheit der Faden verkürzt oder verlängert wird und dadurch die Fadenspannung kurzzeitig ansteigt beziehungsweise absinkt. Diese Spannungsschwankungen können aber durch die bekannten Einrichtungen wegen der durch die Trägheit des Sensors und der Steuerung bedingten Zeitverzögerung nicht ausgeregelt werden. In winding machines, the problem is that by the linear movement of the yarn laying unit the thread is shortened or lengthened and thereby the thread tension for a short time increases or decreases. These voltage fluctuations can however by the known devices because of the inertia of the sensor and the controller conditional time delay can not be corrected.

In der EP-A-1 318 097 ist ein Verfahren der eingangs genannten Art beschrieben, bei welchem eine Unterscheidung der die Schwankungen der Fadenspannung verursachenden Störungen nach periodischen und stochastischen Störungen erfolgt, und die periodischen Störungen berechnet und für die genannte Regelgrösse berücksichtigt werden. Die stochastischen Störungen sind die durch den Abzug des Fadens bedingten Störungen und die periodischen Störungen, welche wesentlich grösser sind als die stochastischen, sind die durch die Fadenverlegung bedingten Störungen. Da die letzteren geometrisch bedingt sind, können sie berechnet werden.In EP-A-1 318 097 a method of the type mentioned is described in which a distinction of the disturbances causing the fluctuations of the thread tension after periodic and stochastic disturbances, and the periodic disturbances calculated and taken into account for the said controlled variable. The stochastic Faults are caused by the deduction of the thread disturbances and the periodic Disturbances that are much larger than the stochastic ones are caused by the laying of the thread conditional disturbances. Since the latter are geometrically conditioned, they can be calculated.

Es hat sich gezeigt, dass durch dieses Verfahren die Schwankungen der Fadenspannung nicht in allen Fällen ausreichend gut kompensiert werden, so dass die Toleranzbandbreite der Fadenspannung im erzeugten Produkt noch immer relativ hoch ist.It has been found that by this method, the variations in the thread tension is not be sufficiently well compensated in all cases, so that the tolerance bandwidth of Thread tension in the product produced is still relatively high.

Durch die Erfindung sollen nun dieses bekannte Verfahren zur Regelung der Fadenspannung auf einer Textilmaschine so verbessert werden, dass die Qualität der Kompensation der periodischen Fadenspannungsschwankungen weiter verbessert und dadurch die Toleranzbandbreite der Fadenspannung im erzeugten Produkt enger wird.The invention should now this known method for controlling the thread tension On a textile machine can be improved so that the quality of the compensation of periodic thread tension fluctuations further improved and thereby the tolerance bandwidth the yarn tension in the product produced becomes narrower.

Diese Aufgabe wird bei einem Verfahren der eingangs genannten Art erfindungsgemäss dadurch gelöst, dass die Fadenspannung positionsabhängig gemessen wird und die dabei gemessenen Schwankungen der Fadenspannung für die genannte Regelgrösse berücksichtigt werden, wobei eine laufende Synchronisation zwischen der Position des Fadenführers und der Steuerung der Fadenlieferung erfolgt und somit ein positionsabhängiger Messwert der Fadenspannung gewonnen wird.This object is achieved according to the invention in a method of the type mentioned solved that the thread tension is measured depending on the position and the case taken into account measured fluctuations in the thread tension for said controlled variable be, with an ongoing synchronization between the position of the thread guide and the Control of the thread delivery takes place and thus a position-dependent measurement of the Thread tension is obtained.

Eine erste bevorzugte Ausführungsform des erfindungsgemässen Verfahrens ist dadurch gekennzeichnet, dass die Messung der Fadenspannung an festen Positionen n-mal über einen Hub des Fadenführers erfolgt, und dass die Messwerte für jede Position über m Verlegezyklen ermittelt und gemittelt werden.A first preferred embodiment of the method according to the invention is characterized characterized in that the measurement of the thread tension at fixed positions n times over a Hub of the thread guide takes place, and that the measured values for each position over m laying cycles be determined and averaged.

Die positionsabhängige Ermittlung der Fadenspannung und die zugehörige Synchronisation der Liefergeschwindigkeit des Fadens ist unanhängig vom Hub und von der Geschwindigkeit des Fadenführers. Diese Unabhängigkeit erlaubt die Kompensation von periodischen Schwankungen der Fadenspannung auch bei Start- und Stoprampen sowie bei tiefen Produktionsgeschwindigkeiten.The position-dependent determination of the thread tension and the associated synchronization of the The delivery speed of the thread is independent of the stroke and the speed of the thread Yarn guide. This independence allows the compensation of periodic fluctuations the thread tension also at start and stop ramps as well as at low production speeds.

Eine zweite bevorzugte Ausführungsform des erfindungsgemässen Verfahrens ist dadurch gekennzeichnet, dass Störungen der Fadenspannung aufgrund der Abweichung des aktuellen positionsabhängigen Messwerts von dem über m Zyklen gemittelten Wert erkannt werden.A second preferred embodiment of the method according to the invention is characterized characterized in that disturbances of the thread tension due to the deviation of the current position-dependent measured value from the value averaged over m cycles.

Gemäss einer dritten bevorzugten Ausführungsform des erfindungsgemässen Verfahrens wird der positionsabhängige Messwert der Fadenspannung als Basis-Regelgrösse verwendet, welcher an den Umkehrpunkten des Fadenführers ein Korrekturwert für eine kurzzeitige Abbremsung des Lieferwerks überlagert wird.According to a third preferred embodiment of the inventive method is the position-dependent measured value of the thread tension is used as basic controlled variable, which at the reversal points of the thread guide a correction value for a short-term Abbremsung the delivery plant is superimposed.

Eine vierte bevorzugte Ausführungsform ist dadurch gekennzeichnet, dass anhand des positionsabhängigen Messwerts der Fadenspannung eine adaptive Anpassung der Liefergeschwindigkeit erfolgt, bei welcher in Abhängigkeit von der jeweiligen Position des Fadenführers die Liefergeschwindigkeit erhöht oder reduziert wird.A fourth preferred embodiment is characterized in that based on the position-dependent measured value of the thread tension an adaptive adjustment of the delivery speed takes place, in which, depending on the respective position of the yarn guide the delivery speed is increased or reduced.

Die Erfindung betrifft weiter eine Vorrichtung zur Regelung der Fadenspannung auf einer Textilmaschine, mit einem motorisch angetriebenen Lieferwerk für den Faden und einer Fadenverlegung mit einem Fadenführer zum Aufwickeln des Fadens auf einen Garnträger, wobei der Antrieb des Lieferwerks so geregelt ist, dass ein Ausgleich der durch die Fadenverlegung bedingten Störungen der Fadenspannung erfolgt. Die erfindungsgemässe Vorrichtung ist gekennzeichnet durch einen Sensor zur Messung der Fadenspannung und durch eine Auswertestufe für die Sensorsignale, in welcher eine Zuordnung der Messwerte des Sensors zur jeweiligen Position des Fadenführers erfolgt, und durch Mittel für eine laufende Synchronisation zwischen der Position des Fadenführers und der Steuerung der Fadenlieferung.The invention further relates to a device for controlling the thread tension on a textile machine, with a motor-driven delivery mechanism for the thread and a thread laying with a yarn guide for winding the yarn on a yarn carrier, wherein the Drive of the delivery mechanism is regulated so that a balance of the thread laying conditional disturbances of the thread tension occurs. The inventive device is characterized by a sensor for measuring the thread tension and by an evaluation stage for the sensor signals, in which an assignment of the measured values of the sensor to respective position of the thread guide, and by means for an ongoing synchronization between the position of the thread guide and the control of the thread delivery.

Eine erste bevorzugte Ausführungsform der erfindungsgemässen Vorrichtung ist dadurch gekennzeichnet, dass eine Mittelung der Messwerte der Fadenspannung für die einzelnen Positionen über eine Anzahl von Verlegezyklen erfolgt.A first preferred embodiment of the device according to the invention is characterized characterized in that an averaging of the measured values of the thread tension for the individual Positions over a number of laying cycles takes place.

Eine zweite bevorzugte Ausführungsform der erfindungsgemässen Vorrichtung ist dadurch gekennzeichnet, dass die Bestimmung der genannten Regelgrösse unter Mitberücksichtigung der momentanen Fadengeschwindigkeit erfolgt.A second preferred embodiment of the device according to the invention is characterized in that that the determination of the named controlled variable takes into account the current thread speed occurs.

Eine dritte bevorzugte Ausführungsform der erfindungsgemässen Vorrichtung ist dadurch gekennzeichnet, dass eine erste Steuerstufe für den Antrieb des Garnträgers und der Fadenverlegung und eine mit dieser verbundene zweite Steuerstufe für den Antrieb des Lieferwerks vorgesehen sind, von denen eine die genannte Auswertestufe enthält, und dass zwischen den beiden Steuerstufen eine laufende Übermittlung und Synchronisierung der Position des Fadenführers erfolgt.A third preferred embodiment of the device according to the invention is characterized in that that a first control stage for the drive of the yarn carrier and the thread laying and provided with this second control stage for the drive of the delivery mechanism of which one contains the mentioned evaluation stage, and that between the both control stages an ongoing transmission and synchronization of the position of the thread guide he follows.

Eine weitere bevorzugte Ausführungsform der erfindungsgemässen Vorrichtung ist dadurch gekennzeichnet, dass der Fadenführer eine hin- und hergehende Changierbewegung ausführt, und dass der Antrieb des Lieferwerks so geregelt ist, dass an den Umkehrpositionen des Fadenführers eine zur Kompensation der Stillstandszeit des Fadenführers dienende Reduktion der Fadenliefergeschwindigkeit erfolgt.A further preferred embodiment of the device according to the invention is characterized characterized in that the thread guide performs a reciprocating traversing movement, and that the drive of the delivery mechanism is regulated so that at the reversal positions of the Yarn guide a serving to compensate for the downtime of the yarn guide reduction the yarn delivery speed takes place.

Die Erfindung betrifft weiter eine Anwendung des genannten Verfahrens auf Spulmaschinen, Aircovering-Maschinen oder Texturiermaschinen. The invention further relates to an application of said method to winding machines, Aircovering machines or texturing machines.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels und der Zeichnungen näher erläutert; es zeigt:

Fig. 1
eine schematische Darstellung der Spulstation einer Spulmaschine; und
Fig. 2
ein Diagramm des Regelkreises zur Regelung der Fadenspannung.
In the following the invention with reference to an embodiment and the drawings will be explained in more detail; it shows:
Fig. 1
a schematic representation of the winding station of a winder; and
Fig. 2
a diagram of the control loop for controlling the thread tension.

Die in Fig. 1 dargestellte Spulstation besteht aus einer Aufsteckung 1 zur Aufnahme einer Vorlagespule 2 mit einem Faden F, einer Fadendämmung 3, einem von einem Motor 4 angetriebenen Lieferwerk 5, einem Sensor 6 zur Messung der Spannung des Fadens F und einem Spulaggregat 7. Das letztere besteht aus einer durch einen Motor (nicht dargestellt) antreibbaren Spindel 8 zur Aufnahme und Halterung einer Spulenhülse 9, auf die eine Spule 10 aufgewickelt wird, und aus einer Fadenverlegung 11. Alternativ kann der Antrieb der Spule 10 über eine motorisch angetriebene Reibwalze erfolgen, auf der die Spule 10 aufliegt (siehe dazu EP-A-1 125 878). Die Fadenverlegung 11 enthält als wesentlichstes Element einen Fadenführer 12, der entlang der Achse der Spule 10 eine oszillierende Changierbewegung ausführt. Eine solche Fadenverlegung ist beispielsweise in der EP-A-0 829 444 (= US-A-5 918 829), der EP-A-1 125 878, der EP-A-1 209 114 und der EP-A-1 219 559 beschrieben, auf deren Offenbarung hiermit ausdrücklich Bezug genommen wird.The winding station shown in Fig. 1 consists of a Aufsteckung 1 for receiving a feed bobbin 2 with a thread F, a thread insulation 3, one of a motor 4 driven Delivery mechanism 5, a sensor 6 for measuring the tension of the thread F and a Winding unit 7. The latter consists of a by a motor (not shown) drivable Spindle 8 for receiving and holding a bobbin tube 9, on which a coil 10th is wound, and from a thread laying 11. Alternatively, the drive of the coil 10th take place via a motor-driven friction roller on which the coil 10 rests (see EP-A-1 125 878). The thread laying 11 contains a thread guide as the most essential element 12, which performs an oscillating traversing movement along the axis of the spool 10. A such thread laying is described, for example, in EP-A-0 829 444 (= US Pat. No. 5,918,829), EP-A-1 125 878, EP-A-1 209 114 and EP-A-1 219 559, to the disclosure of which hereby incorporated by reference.

Anstatt der dargestellten Fadenverlegung 11 mit dem entlang der Achse der Spule 10 eine oszillierende Changierbewegung ausführenden Fadenführer 12 kann auch eine so genannte Flügel-Fadenverlegung der in der EP-A-0 997 422 beschriebenen Art vorgesehen sein. Eine solche Flügel-Fadenverlegung weist zwei gegenläufig rotierbare, übereinander angeordnete Fadenführerflügel und eine Bogenscheibe auf. Die Fadenführerflügel treten aus der Kontur der Bogenscheibe hervor und tauchen wieder in diese ein, wobei an den Eintauchpunkten der Fadenführerflügel jeweils die Übergabe des Fadens erfolgt.Instead of the illustrated thread laying 11 with the along the axis of the coil 10 a oscillating traversing motion yarn guide 12 can also be a so-called Wing-thread laying of the type described in EP-A-0 997 422 may be provided. A such wing thread laying has two counter-rotatable, superimposed Thread guide wing and a bow disc on. The thread guide wings emerge from the contour of the Arch disc out and dive back into this, where at the immersion points of the Thread guide wings in each case the transfer of the thread takes place.

Der Fadenführer 12 ist auf einem in einer schienen- oder nutenartigen Führung hin und her bewegbaren Gleitorgan 13 befestigt, an welchem ein Changierelement 14 angreift. Dieses ist als flexibles und in Changierrichtung steifes Organ zur Übertragung von Zugkräften ausgebildet und beispielsweise durch eine Saite, einen Draht, ein Metallseil, einen Flach-, Zahn- oder Keilriemen, ein Metallband, eine Kette oder dgl. gebildet. Das Changierelement 14 läuft über zwei Rollen 15 und 16, von denen die eine, darstellungsgemäss die Rolle 16, als Treibrad für den Antrieb des Changierelements 14 dient.The yarn guide 12 is movable to and fro in a rail or groove-like guide Glide element 13 attached to which a traversing element 14 attacks. This is as flexible and stiff in traversing direction organ for transmitting tensile forces formed and for example by a string, a wire, a metal cable, a flat, toothed or V-belt, a metal band, a chain or the like. Formed. The traversing element 14 passes over two Rollers 15 and 16, one of which, according to the role of the roller 16, as a drive wheel for the Drive of the traversing element 14 is used.

Das Treibrad 16 ist von einem Servomotor (nicht dargestellt), vorzugsweise einem Schrittmotor, angetrieben. Vorzugsweise ist das Treibrad 16 direkt auf der Motorwelle befestigt. Dem Motor ist ein Sensor (nicht dargestellt) zur Detektion der Drehposition des Treibrades 16 und damit der Changierposition des Fadenführers 12 zugeordnet. Bezüglich dieses Sensors wird auf die EP-A-0 829 444 und die zu dieser korrespondierende US-A-5 918 829 verwiesen. Der Sensor ist ein aus einer Sende- und einer Empfangsdiode bestehender fotoelektrischer Sensor, der die Bewegung des Treibrads 16 oder einer mit diesem starr verbundenen Scheibe abtastet. Das Treibrad 16 oder die Scheibe ist zu diesem Zweck mit geeigneten optisch abtastbaren Markierungen, beispielsweise mit entlang eines Kreises angeordneten Löchern oder Schlitzen, versehen.The drive wheel 16 is by a servo motor (not shown), preferably a stepper motor, driven. Preferably, the drive wheel 16 is mounted directly on the motor shaft. The engine is a sensor (not shown) for detecting the rotational position of the drive wheel 16 and thus associated with the traversing position of the thread guide 12. Regarding this sensor is on the EP-A-0 829 444 and corresponding US-A-5,918,829. The sensor is a consisting of a transmitting and a receiving diode photoelectric sensor, the Movement of the drive wheel 16 or scanned with this rigidly connected disc. The Driving wheel 16 or the disc is for this purpose with suitable optically scannable markings, for example, with holes or slots arranged along a circle.

Die Antriebsmotoren der Spindel 8 und des Treibrades 16, der Sensor für die Changierposition des Fadenführers 12 sowie eventuelle weitere Sensoren, beispielsweise für die Drehzahl der Spule 10, sind mit einer Spindelsteuerung 17 verbunden, welche die genannten Motoren anhand von programmierten Spulparametern und Wickelgesetzen sowie der von den Sensoren gelieferten Daten steuert. Die Spindelsteuerung 17 ist ausserdem mit einer Liefersteuerung 18 verbunden, welche ihrerseits mit dem Fadenspannungssensor 6 und mit dem Antriebsmotor 4 des Lieferwerks 5 verbunden ist.The drive motors of the spindle 8 and the drive wheel 16, the sensor for the traversing position the thread guide 12 and any other sensors, for example, for the speed of Coil 10, are connected to a spindle control 17, which uses the aforementioned motors programmed winding parameters and winding laws as well as those of the sensors controls supplied data. The spindle control 17 is also provided with a delivery control 18 connected, which in turn with the yarn tension sensor 6 and the drive motor. 4 of the delivery plant 5 is connected.

Der Fadenspannungssensor 6 misst die Schwankungen der Fadenspannung an festen Positionen n-mal über einen Hub. Diese Messwerte werden über m Verlegezyklen ermittelt und gemittelt. Die so gewonnenen Werte zeigen also ein Abbild der Fadenverkürzung oder Fadenverlängerung vor der Fadenverlegung 11 und bilden den Vorsteuerwert für die Regelgrösse der Fadenlieferung. Wichtig für die positionsabhängige Ermittlung der Fadenspannung ist die Information, an welcher Position sich der Fadenführer 12 zu einer bestimmten Zeit befindet. Diese Information wird laufend mit hoher Priorität zwischen der Spindelsteuerung 17 und der Liefersteuerung 18 ausgetauscht und es erfolgt eine Synchronisierung der Zeitbasis.The thread tension sensor 6 measures the variations in the thread tension at fixed Positions n times over a hub. These measured values are determined over m laying cycles and averaged. The values obtained thus show an image of the thread shortening or thread extension before the thread laying 11 and form the pilot value for the controlled variable of Thread delivery. Important for the position-dependent determination of the thread tension is the Information on which position the yarn guide 12 is at a certain time. This information is continuously high priority between the spindle control 17 and the Delivery control 18 exchanged and there is a synchronization of the time base.

Wesentlich ist auch, dass die positionsabhängige Ermittlung der Fadenspannung und auch die zugehörige Synchronisation der Spindelsteuerung 17 und der Liefersteuerung 18 vom Hub und von der Geschwindigkeit der Fadenverlegung 11 unabhängig ist. Diese Unabhängigkeit erlaubt die Kompensation von so genannten periodischen Fadenschwankungen auch bei Start- und Stopprampen sowie bei tiefen Produktionsgeschwindigkeiten.It is also essential that the position-dependent determination of the thread tension and also the associated synchronization of the spindle control 17 and the delivery control 18 from the hub and is independent of the speed of the thread laying 11. This independence allows the compensation of so-called periodic thread fluctuations even at start and end Stop ramps and at low production speeds.

Periodische Fadenschwankungen sind Störungen, die durch die Fadenverlegung 11 verursacht sind. Ein Blick auf die Geometrie der Fadenverlegung zeigt, dass wegen der linearen Bewegung des Fadenführers 12, die Länge des Fadens F zwischen diesem und dem Fadenspannungssensor 6 an den Umkehrpunkten der Changierbewegung grösser ist als in der Mitte.Periodic thread fluctuations are disturbances caused by the thread laying 11 are. A look at the geometry of the thread laying shows that because of the linear Movement of the thread guide 12, the length of the thread F between this and the thread tension sensor 6 at the reversal points of the traversing movement is greater than in the middle.

Diese Verhältnisse sind durch den gestrichelten Kreisbogen B angedeutet, wobei der Längenunterschied zwischen den beiden Extremwerten mit dem Bezugszeichen A bezeichnet ist. Diesem Längenunterschied entspricht ein Unterschied der Fadenspannung, welche an den Umkehrpunkten grösser ist als in der Mitte. Die Fadenspannung erreicht also an einem Umkehrpunkt ihren Höchstwert, nimmt gegen die Mitte hin ab, erreicht dort ihren Tiefstwert und steigt dann bis zum Umkehrpunkt wieder an.These relationships are indicated by the dashed arc B, wherein the difference in length between the two extreme values is denoted by the reference numeral A. This difference in length corresponds to a difference in the thread tension, which at the Reversal points is greater than in the middle. The thread tension reaches at one Reversal point their maximum value, decreases towards the middle, reaches there their lowest value and then rises again until the reversal point.

Zusätzlich zu den periodischen Fadenspannungsschwankungen gibt es noch stochastische Störungen oder Schwankungen, die durch den Fadenabzug von der Vorlagespule 2 und durch die Lieferung 5 verursacht sind. Diese stochastischen Störungen gehen in die Messwerte des Sensors 6 nur mit einem sehr geringen Anteil ein. Sie weichen vom ermittelten Vorsteuerwert ab und beeinflussen die Fadenlieferung 5 derart, dass eine konstante Fadenspannung erzielt wird.In addition to the periodic thread tension fluctuations, there are still stochastic Disturbances or fluctuations caused by the thread withdrawal from the supply spool 2 and through the delivery 5 are caused. These stochastic disturbances go into the measured values of the Sensors 6 only with a very small proportion. They deviate from the calculated pre-tax value from and affect the yarn delivery 5 such that a constant yarn tension achieved becomes.

Die Geometrie der Fadenverlegung 11, die ja bekannt ist, wird dazu benutzt, um die Fadenlieferung 5 an den Umkehrpunkten des Fadenführers 12 kurz abzubremsen. An diesen Umkehrpunkten erfolgt eine wesentliche, aber von der Bewicklungslänge abhängige Drosselung des Motors 4, um die Stillstandszeit des Fadenführers 12 an den Umkehrpunkten zu kompensieren.The geometry of the thread laying 11, which is well known, is used to thread delivery 5 to decelerate briefly at the reversal points of the yarn guide 12. At these reversal points There is a significant, but dependent on the Bewicklungslänge throttling the Motor 4 to compensate for the downtime of the yarn guide 12 at the reversal points.

Das Diagramm von Fig. 2 zeigt den Regelkreis für die beschriebene Regelung der Fadenspannung: Links oben erkennt man die der Spindelsteuerung 17 vorgebbaren Parameter 19, das ist die Verlegungsgeometrie und die Aufwickelgeometrie, darunter den der Liefersteuerung 18 vorgebbaren Sollwert 20 der Fadenspannung. Der letztere wird über ein Addierglied 21 und eine Übertragungsfunktion 22 mit den Parametern 19 verknüpft. Dem Addierglied 21 ist auch der vom Fadenspannungssensor 6 gemessene und verarbeitete Istwert der Fadenspannung zugeführt. Mit Übertragungsfunktion 22 ist das mathematische Verhältnis zwischen Eingangs- und Ausgangssignal unter Berücksichtigung einer zeitlichen Verzögerung bezeichnet. Mit anderen Worten, bei einer Veränderung am Eingang der Übertragungsfunktion 22 reagiert deren Ausgang in charakteristischer Weise mit einem neuen Wert. Die Verknüpfung des Ausgangs der Übertragungsfunktion 22 mit den Parametern 19 gelangt zur Regelstrecke 23, das ist das zu beeinflussende Glied oder der zu regelnde Teil des Regelkreises. Für die Regelung ist eine Rückkopplung nötig. Im vorliegenden Fall sind dies der Faden F und die Eigenschaften der Elemente, welche der Faden F auf seinem Weg berührt. Solche Eigenschaften sind beispielsweise die Oberfläche der Antriebsrolle (Lieferwerk 5) und die Oberflächen aller Umlenkstellen.The diagram of Fig. 2 shows the control loop for the described control of the thread tension: At the top left you can see the parameters of the spindle control 17 specifiable 19, this is the laying geometry and the winding geometry, including that of the delivery control 18 predefinable setpoint 20 of the thread tension. The latter is via an adder 21 and a transfer function 22 associated with the parameters 19. The adder 21 is also the actual value of the thread tension measured and processed by the thread tension sensor 6 fed. With transfer function 22, the mathematical relationship between input and output signal in consideration of a time delay. With In other words, responding to a change in the input of the transfer function 22 their output in a characteristic way with a new value. The link of the Output of the transfer function 22 with the parameters 19 reaches the controlled system 23, this is the element to be influenced or the part of the control loop to be controlled. For the Control feedback is needed. In the present case, these are the thread F and the Properties of the elements which the thread F touches on its way. Such properties are, for example, the surface of the drive roller (delivery mechanism 5) and the surfaces all deflection points.

Auch die Materialparameter 24 des Fadens F, und hier insbesondere dessen Elastizität, sind wesentlich für die Regelung. Sie sind als eigenes Kästchen aufgeführt, weil abhängig vom Material andere Regelereinstellungen verwendet werden können. Das Ausgangssignal der Stufe 24 ist der Istwert der Fadenzugkraft/Fadenspannung. Die Fadenspannung wird n-mal an festen Positionen (winkelsynchron) gemessen und vom Regler in einer Stufe 25 über m Abtastungen gemittelt. Die Fadenspannung stellt also den positionsabhängigen Istwert der zu regelnden Grösse dar. Der Regelalgorithmus 26 ist beispielsweise ein PD-Regler, PID-Regler oder 3-Punktregler. Störungen der Fadenspannung werden als solche erkannt, weil ihr aktueller Wert von dem über m Perioden gemittelten Wert abweicht.Also, the material parameters 24 of the thread F, and in particular its elasticity, are essential for the scheme. They are listed as a separate box because it depends on the Material other rule settings can be used. The output signal of Level 24 is the actual value of the thread tension / thread tension. The thread tension will be n times fixed positions (angle synchronous) and measured by the controller in a step 25 over m Averaged samples. The thread tension thus sets the position-dependent actual value to regulating variable 26 is the control algorithm 26, for example, a PD controller, PID controller or 3-point controller. Disturbances of the thread tension are recognized as such, because their current Value deviates from the value averaged over m periods.

Claims (11)

Verfahren zur Regelung der Fadenspannung auf einer Textilmaschine, auf welcher der Faden (F) durch eine Fadenlieferung (5) von einem Vorrat (2) abgezogen und einer einen Fadenführer (12) aufweisenden Fadenverlegung (11) zugeführt wird, wobei eine Regelgrösse für die Liefergeschwindigkeit des Fadens (F) gewonnen wird, dadurch gekennzeichnet, dass die Fadenspannung positionsabhängig gemessen wird und die dabei gemessenen Schwankungen der Fadenspannung für die genannte Regelgrösse berücksichtigt werden, wobei eine laufende Synchronisation zwischen der Position des Fadenführers (12) und der Steuerung (18) der Fadenlieferung (5) erfolgt und somit ein positionsabhängiger Messwert der Fadenspannung gewonnen wird.Method for controlling the thread tension on a textile machine, on which the thread (F) is withdrawn from a supply (2) by a thread supply (5) and fed to a thread transfer (11) having a thread guide (12), wherein a controlled variable for the delivery speed of the yarn (F) is obtained, characterized in that the yarn tension is measured position dependent and the measured fluctuations in the yarn tension for said controlled variable are taken into account, wherein a continuous synchronization between the position of the yarn guide (12) and the controller (18) Thread delivery (5) takes place and thus a position-dependent measurement of the thread tension is obtained. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Messung der Fadenspannung an festen Positionen n-mal über einen Hub des Fadenführers (12) erfolgt, und dass die Messwerte für jede Position über m Verlegezyklen ermittelt und gemittelt werden.A method according to claim 1, characterized in that the measurement of the thread tension at fixed positions takes place n times by a stroke of the thread guide (12), and that the measured values are determined and averaged over m laying cycles for each position. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass Störungen der Fadenspannung aufgrund der Abweichung des aktuellen positionsabhängigen Messwerts von dem über m Zyklen gemittelten Wert erkannt werden.A method according to claim 2, characterized in that disturbances of the thread tension due to the deviation of the current position-dependent measured value are detected by the value averaged over m cycles value. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass der positionsabhängige Messwert der Fadenspannung als Basis-Regelgrösse verwendet wird, welcher an den Umkehrpunkten des Fadenführers (12) ein Korrekturwert für eine kurzzeitige Abbremsung des Lieferwerks (5) überlagert wird.A method according to claim 3, characterized in that the position-dependent measured value of the thread tension is used as the basic controlled variable, which is superimposed on the reversal points of the thread guide (12) a correction value for a brief deceleration of the delivery mechanism (5). Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass anhand des positionsabhängigen Messwerts der Fadenspannung eine adaptive Anpassung der Liefergeschwindigkeit erfolgt, bei welcher in Abhängigkeit von der jeweiligen Position des Fadenführers (12) die Liefergeschwindigkeit erhöht oder reduziert wird.Method according to one of claims 1 to 4, characterized in that on the basis of the position-dependent measured value of the thread tension an adaptive adjustment of the delivery speed takes place, in which the delivery speed is increased or reduced depending on the respective position of the thread guide (12). Vorrichtung zur Regelung der Fadenspannung auf einer Textilmaschine, mit einem motorisch angetriebenen Lieferwerk (5) für den Faden (F) und einer Fadenverlegung (11) mit einem Fadenführer (12) zum Aufwickeln des Fadens (F) auf einen Garnträger (9), wobei der Antrieb (4) des Lieferwerks (5) so geregelt ist, dass ein Ausgleich der durch die Fadenverlegung (11) bedingten Störungen der Fadenspannung erfolgt, gekennzeichnet durch einen Sensor (6) zur Messung der Fadenspannung und durch eine Auswertestufe (25) für die Sensorsignale, in welcher eine Zuordnung der Messwerte des Sensors (6) zur jeweiligen Position des Fadenführers (12) erfolgt, und durch Mittel (26) für eine laufende Synchronisation zwischen der Position des Fadenführers (12) und der Steuerung (18) der Fadenlieferung (5). Device for controlling the thread tension on a textile machine, comprising a motor-driven delivery mechanism (5) for the thread (F) and a thread laying device (11) with a thread guide (12) for winding the thread (F) onto a yarn carrier (9), wherein the drive (4) of the delivery mechanism (5) is controlled such that a compensation of the thread tension caused by the thread laying (11) is effected, characterized by a sensor (6) for measuring the thread tension and by an evaluation stage (25) for the thread tensioner Sensor signals, in which an assignment of the measured values of the sensor (6) takes place to the respective position of the thread guide (12), and by means (26) for a continuous synchronization between the position of the thread guide (12) and the control (18) of the thread delivery ( 5). Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass eine Mittelung der Messwerte der Fadenspannung für die einzelnen Positionen über eine Anzahl von Verlegezyklen erfolgt.Apparatus according to claim 6, characterized in that an averaging of the measured values of the thread tension for the individual positions takes place over a number of laying cycles. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Bestimmung der genannten Regelgrösse unter Mitberücksichtigung der momentanen Fadengeschwindigkeit erfolgt.Apparatus according to claim 6 or 7, characterized in that the determination of said control variable takes place taking into account the current thread speed. Vorrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass eine erste Steuerstufe (17) für den Antrieb des Garnträgers (9) und der Fadenverlegung (12) und eine mit dieser verbundene zweite Steuerstufe (18) für den Antrieb des Lieferwerks (5) vorgesehen sind, von denen eine die genannte Auswertestufe (25) enthält, und dass zwischen den beiden Steuerstufen (17, 18) eine laufende Übermittlung und Synchronisierung der Position des Fadenführers (12) erfolgt.Device according to one of claims 6 to 8, characterized in that a first control stage (17) for driving the yarn carrier (9) and the thread laying (12) and a second control stage (18) connected thereto for driving the delivery mechanism (5 ), of which one contains said evaluation stage (25), and that between the two control stages (17, 18) there is a continuous transmission and synchronization of the position of the thread guide (12). Vorrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass der Fadenführer (12) eine hin- und hergehende Changierbewegung ausführt, und dass der Antrieb des Lieferwerks (5) so geregelt ist, dass an den Umkehrpositionen des Fadenführers (12) eine zur Kompensation der Stillstandszeit des Fadenführers (12) dienende Reduktion der Fadenliefergeschwindigkeit erfolgt.Device according to one of claims 6 to 9, characterized in that the thread guide (12) performs a reciprocating traversing movement, and that the drive of the delivery mechanism (5) is regulated so that at the reversal positions of the thread guide (12) one for Compensation of the downtime of the thread guide (12) serving reduction of the yarn delivery speed takes place. Anwendung des Verfahrens nach einem der Ansprüche 1 bis 5 auf Spulmaschinen, Aircovering-Maschinen oder Texturiermaschinen.Application of the method according to one of Claims 1 to 5 to winding machines, Aircovering machines or texturing machines.
EP03022333A 2003-10-04 2003-10-04 Method and apparatus for controlling the yarn tension in a textile machine and use of the method Expired - Lifetime EP1520827B1 (en)

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DE50305700T DE50305700D1 (en) 2003-10-04 2003-10-04 Method and device for controlling the thread tension on a textile machine, and application of the method
EP03022333A EP1520827B1 (en) 2003-10-04 2003-10-04 Method and apparatus for controlling the yarn tension in a textile machine and use of the method
AT03022333T ATE345303T1 (en) 2003-10-04 2003-10-04 METHOD AND DEVICE FOR CONTROLLING THREAD TENSION ON A TEXTILE MACHINE, AND APPLICATION OF THE METHOD

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EP0470273A1 (en) * 1990-08-06 1992-02-12 TEIJIN SEIKI CO. Ltd. Method and apparatus for winding a yarn
WO1992008664A1 (en) * 1990-11-09 1992-05-29 James Edward Freeman Thread package building
EP1125880A2 (en) * 2000-02-17 2001-08-22 Schärer Schweiter Mettler AG Device for producing bobbins in an open-end spinning machine
EP1318097A1 (en) * 2001-12-05 2003-06-11 Schärer Schweiter Mettler AG Method and device for controlling the yarn tension in a textile machine and use of the method

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CN101913515A (en) * 2010-07-15 2010-12-15 上海世纤新材料科技有限公司 Constant tension system for automatically adjusting tension of thread rope by adopting mechanical and electronic way for winding machine
DE102014013652A1 (en) * 2014-09-21 2016-03-24 Hanning Elektro-Werke Gmbh & Co. Kg drive arrangement
CN108425174A (en) * 2018-05-24 2018-08-21 浙江理工大学 A kind of identical tension takes yarn feeding device and its working method
CN108425174B (en) * 2018-05-24 2023-09-01 浙江理工大学 Constant tension yarn carrying device and working method thereof
CN109230870A (en) * 2018-10-12 2019-01-18 常州市新创智能科技有限公司 Carbon fibre stretching creel is grouped moment control device and control method
CN112209180A (en) * 2019-07-11 2021-01-12 爱吉尔电子股份公司 Method for feeding a plurality of yarns to a textile machine through an active yarn feeder
CN112209180B (en) * 2019-07-11 2023-08-22 爱吉尔电子股份公司 Method for feeding a plurality of yarns to a textile machine by means of a positive yarn feeder
EP3950552A1 (en) * 2020-08-07 2022-02-09 TMT Machinery, Inc. Yarn winder
TWI845850B (en) 2020-08-07 2024-06-21 日商Tmt機械股份有限公司 Yarn winder
CN113682891A (en) * 2021-09-07 2021-11-23 巨石集团有限公司 Single-head double-division cake-spinning machine and cake-spinning method thereof

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DE50305700D1 (en) 2006-12-28
ATE345303T1 (en) 2006-12-15
EP1520827B1 (en) 2006-11-15

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